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BACKGROUND: Adjunctive screw fixation has been shown to be reliable in achieving acetabular component stability in revision total hip arthroplasty (THA). The purpose of this study was to assess the effect of inferior screw placement on acetabular component failure following revision THA. We hypothesized that inferior screw fixation would decrease acetabular failure rates. METHODS: We reviewed 250 patients who had Paprosky Type II or III defects who underwent acetabular revision between 2001 and 2021 across three institutions. Demographic factors, the number of screws, location of screw placement (superior versus inferior), use of augments and/or cup-cage constructs, Paprosky classification, and presence of discontinuity were documented. Multivariate regression was performed to identify the independent effect of inferior screw fixation on the primary outcome of aseptic rerevision of the acetabular component. RESULTS: At a mean follow-up of 53.4 months (range, 12 to 261), 16 patients (6.4%) required re-revision for acetabular loosening. There were 140 patients (56.0%) who had inferior screw fixation, all of whom did not have neurovascular complications during screw placement. Patients who had inferior screws had a lower rate of acetabular rerevision than those who only had superior screw fixation (2.1 versus 11.8%, P = .0030). Multivariate regression demonstrates that inferior screw fixation decreased the likelihood of rerevision for acetabular loosening when compared to superior screw fixation alone (odds ratio: 0.1, confidence interval: 0.03 to 0.5; P = .0071). No other risk factors were identified. CONCLUSIONS: Inferior screw fixation is a safe and reliable technique to reduce acetabular component failure following revision THA in cases of severe acetabular bone loss.
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Acetábulo , Artroplastia de Quadril , Parafusos Ósseos , Prótese de Quadril , Falha de Prótese , Reoperação , Humanos , Artroplastia de Quadril/instrumentação , Artroplastia de Quadril/efeitos adversos , Artroplastia de Quadril/métodos , Acetábulo/cirurgia , Feminino , Masculino , Idoso , Pessoa de Meia-Idade , Prótese de Quadril/efeitos adversos , Estudos Retrospectivos , Distinções e Prêmios , Idoso de 80 Anos ou mais , Adulto , SeguimentosRESUMO
BACKGROUND AND OBJECTIVE: Metastatic cancer of the acetabulum can produce marked pain and disability for patients. Several reconstruction techniques for such lesions have been described, with variable outcomes. The purpose of this study was to determine functional outcomes and complication rate for patients undergoing cement rebar reconstruction using posterior column screws with total hip arthroplasty for large, uncontained lesions of the acetabulum. METHODS: Twenty-two consecutive patients who underwent cement rebar reconstruction with posterior column screws and total hip arthroplasty for metastatic tumors of the acetabulum between 2014 and 2017 were identified. All cases were reviewed for patient demographics, surgical parameters, implant survival, complications, and functional status following these procedures. RESULTS: There was a significant increase in the proportion of patients able to ambulate post-surgery (95.5%) compared with presurgery (22.7%) (p < 0.001). Mean musculoskeletal tumor society score postoperatively was 17.9 (60%). Average operative time was 174 min and average estimated blood loss was 689 mL. Seven patients required an intraoperative or postoperative blood transfusion. Three patients had postoperative complications (14%), two of whom required revision (9%). CONCLUSION: Reconstruction using cement rebar with posterior column screws and total hip arthroplasty is a safe, reproducible approach that may greatly improve functional outcomes with a low rate of intraoperative or postoperative complications.
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Acetábulo , Artroplastia de Quadril , Humanos , Acetábulo/cirurgia , Artroplastia de Quadril/efeitos adversos , Estado Funcional , Complicações Pós-Operatórias/etiologia , Próteses e Implantes , Cimentos Ósseos , Reoperação , Resultado do Tratamento , Estudos RetrospectivosRESUMO
AIMS: Incorporating a steerable sheath that can be visualized using an electroanatomical mapping (EAM) system may allow for more efficient mapping and catheter placement, while reducing radiation exposure, during ablation procedures for atrial fibrillation (AF). This study evaluated fluoroscopy usage and procedure times when a visualizable steerable sheath was used compared with a non-visualizable steerable sheath for catheter ablation for AF. METHODS AND RESULTS: In this retrospective, observational, single-centre study, patients underwent catheter ablation for AF using a steerable sheath that is visualizable using the CARTO EAM (VIZIGO; n = 57) or a non-visualizable steerable sheath (n = 34). The acute procedural success rate was 100%, with no acute complications in either group. Use of the visualizable sheath vs. the non-visualizable sheath was associated with a significantly shorter fluoroscopy time [median (first quartile, third quartile), 3.4 (2.1, 5.4) vs. 5.8 (3.8, 8.6) min; P = 0.003], significantly lower fluoroscopy dose [10.0 (5.0, 20.0) vs. 18.5 (12.3, 34.0) mGy; P = 0.015], and significantly lower dose area product [93.0 (48.0, 197.9) vs. 182.2 (124.5, 355.0) µGy·m2; P = 0.017] but with a significantly longer mapping time [12.0 (9.0, 15.0) vs. 9.0 (7.0, 11.0) min; P = 0.004]. There was no significant difference between the visualizable and non-visualizable sheaths in skin-to-skin time [72.0 (60.0, 82.0) vs. 72.0 (55.5, 80.8) min; P = 0.623]. CONCLUSION: In this retrospective study, use of a visualizable steerable sheath for catheter ablation of AF significantly reduced radiation exposure vs. a non-visualizable steerable sheath. Although mapping time was longer with the visualizable sheath, the overall procedure time was not increased.
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Fibrilação Atrial , Ablação por Cateter , Exposição à Radiação , Humanos , Fibrilação Atrial/diagnóstico por imagem , Fibrilação Atrial/cirurgia , Estudos Retrospectivos , Resultado do Tratamento , Exposição à Radiação/efeitos adversos , Exposição à Radiação/prevenção & controle , Ablação por Cateter/efeitos adversos , Ablação por Cateter/métodos , Fluoroscopia/métodosRESUMO
BACKGROUND: Indications and techniques for limb lengthening procedures have evolved over the past two decades. Although there are several case series reporting on the complications and efficacy of these techniques, limited data are available on length of stay and hospital readmission rates after these procedures. QUESTIONS/PURPOSES: (1) What is the median length of stay after lower limb lengthening procedures, and is variability in patient demographics, preoperative diagnosis, and surgical technique associated with length of stay? (2) What is the 1-year readmission rate after lower limb lengthening procedures? (3) Is variability in patient demographics, preoperative diagnosis, and surgical technique associated with varying rates of hospital readmission? METHODS: Patients who underwent femoral or tibial lengthening from 2005 to 2015 in seven states were identified using the Healthcare Cost and Utilization Project (HCUP) State Inpatient Databases. These databases include a large, diverse group of patients across a wide range of hospitals and socioeconomic backgrounds with inclusion of patients regardless of payer. Between 2005 and 2015, there were 3979 inpatient admissions that were identified as involving femoral and/or tibial lengthening procedures based on ICD-9 procedure codes; of those, 2% (97 of 3979) of the inpatient admissions were excluded from analysis because they had ICD-9 procedure codes for primary or revision hip or knee arthroplasty, and 10% (394 of 3979) of the inpatient admissions were excluded because they involved repeated admissions of patients with previous hospitalization data within the database. This yielded 3488 patients for analysis. The median (interquartile range) age of patients was 18 years (12 to 41), and 42% (1481 of 3488) of patients were women. A total of 49% (1705 of 3469) of patients were children (younger than 18 years), 19% (675 of 3469) were young adults (18 to 34 years), 24% (817 of 3469) were adults (35 to 59 years), and 8% (272 of 3469) were seniors (60 years and older). Length of stay and rates of readmission at 1 year after the lengthening procedure were calculated. Univariate analysis was performed to examine associations between age, race, payment method, underlying diagnosis, bone lengthened, and lengthening technique with length of stay and readmission rate. Factors found to be significantly associated with the outcome variables (p < 0.05) were further examined with a multivariate analyses. RESULTS: Included patients had a median (IQR) length of hospital stay of 3 days (2 to 4). Given the poor explanatory power of the multivariate model for length of stay (R 2 = 0.03), no meaningful correlations could be drawn between age, race, underlying diagnosis, lengthening technique, and length of stay. The overall 1-year readmission rate was 35% (1237 of 3488). There were higher readmission rates among adult patients compared with pediatric patients (odds ratio 1.78 [95% confidence interval 1.46 to 2.18]; p < 0.001), patients with government insurance compared with commercial insurance (OR 1.28 [95% CI 1.05 to 1.54]; p = 0.01), and patients undergoing lengthening via external fixation (OR 1.61 [95% CI 1.29 to 2.02]; p < 0.001) or hybrid fixation (OR 1.81 [95% CI 1.38 to 2.37]; p < 0.001) compared with lengthening with internal fixation only. CONCLUSION: When counseling patients who may be candidates for limb lengthening, providers should inform individual patients and their caretakers on the anticipated length of hospital stay and likelihood of hospital readmission based on our findings. Adult patients, those with government insurance, and patients undergoing hybrid or external fixator limb lengthening procedures should be advised that they are at greater risk for hospital readmission. The relationship of specific patient-related factors (such as severity of deformity or associated comorbidities) and treatment-related variables (such as amount of lengthening, compliance with physical therapy, or surgeon's experience) with clinical outcomes after lower limb lengthening and the burden of care associated with hospital readmission needs further study. LEVEL OF EVIDENCE: Level III, therapeutic study.
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Alongamento Ósseo , Readmissão do Paciente , Adolescente , Criança , Feminino , Humanos , Tempo de Internação , Masculino , Complicações Pós-Operatórias/diagnóstico , Estudos Retrospectivos , Fatores de Risco , Adulto JovemRESUMO
BACKGROUND: Fiberoptic bronchoscope-guided tracheal intubation is the gold standard for managing patients with supraglottic growths. In infants with a large and overhanging epiglottis, the success of fiberoptic-guided intubation relies heavily on the available space between the inferior surface of the epiglottis and the posterior pharyngeal wall or, more specifically, the superior surface of the supraglottic growth. CASE REPORT: We describe the inability to negotiate the tip of the fiberscope between the epiglottis and the supraglottic growth and the successful use of direct laryngoscopy to improve the available space along with the usefulness of "bubbling of air" to locate the glottic opening in an infant. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: We emphasize the role of the emergency physician in managing such patients. Most of the time, the setting is not ideal in such emergency situations and the most qualified clinician to treat them is the emergency physician. The knowledge and skills of the emergency physician, along with awareness of the possible techniques for airway management, can be lifesaving.
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Manuseio das Vias Aéreas/métodos , Glote/anormalidades , Intubação Intratraqueal/normas , Manuseio das Vias Aéreas/normas , Competência Clínica/normas , Serviço Hospitalar de Emergência/organização & administração , Tecnologia de Fibra Óptica/instrumentação , Tecnologia de Fibra Óptica/métodos , Glote/cirurgia , Humanos , Lactente , Intubação Intratraqueal/métodos , Laringoscopia/instrumentação , Laringoscopia/métodos , MasculinoRESUMO
Background: Left atrial appendage aneurysm (LAAA) is a rare cardiac anomaly, which can be congenital or acquired in origin. Because most cases are asymptomatic, it is typically diagnosed incidentally in the second to third decades of life. We present a case of a 28-year-old male with refractory atrial tachyarrhythmias and significantly reduced exercise tolerance. The informed consent was given by patient for this manuscript. Case summary: We present a case of a 28-year-old male with refractory atrial tachyarrhythmias and significantly reduced exercise tolerance after an episode of COVID respiratory infection. He was referred by primary care physician for management of atrial fibrillation (AF) with CHA2DS2Vasc score zero. He had documented AF and atrial flutter (AFL) resistant to both chemical and electrical cardioversions. Initial portable focused transthoracic echocardiography documented borderline reduced left ventricular ejection fraction in context of AFL. Electrophysiological study confirmed the diagnosis of typical AFL. Successful radiofrequency ablation of cavo-tricuspid isthmus resulted in bidirectional isthmus conduction block. However, patient developed AF, which was electrically cardioverted at the end of procedure. Patient was discharged on bisoprolol, ramipril, and apixaban, and outpatient cardiac MRI was organized to look for post-COVID myocardial scarring. Patient had recurrence of symptoms, and this time it was due to AF. Multimodal imaging led to discovery of LAAA, in which after discussion in multidisciplinary meeting, he was accepted for and managed with surgical resection of LAAA with concomitant Cox-Maze IV procedure. On 9 months post-operative follow up, patient is maintaining sinus rhythm and has completely returned to baseline activities. Discussion: A young patient with refractory atrial arrhythmia should be referred for multimodal cardiovascular imaging to rule out any structural heart disease. Left atrial appendage aneurysm is rare and can be managed conservatively, but surgical excision is most reported and appears to favour arrhythmia-free survival.
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Cervical laminoplasty is an increasingly popular surgical option for the treatment of cervical spondylotic myelopathy (CSM) and ossification of the posterior longitudinal ligament (OPLL). Over the past few decades, there have been substantial developments in both surgical technique and hardware options. As the field of cervical surgery rapidly evolves, there is a timely need to reassess the evolving complications associated with newer techniques. This review aims to synthesize the available literature on cervical laminoplasty and associated mechanical complications pertaining to different laminoplasty hinge fixation options.
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Laminoplastia , Doenças da Medula Espinal , Espondilose , Humanos , Laminoplastia/efeitos adversos , Laminoplastia/métodos , Resultado do Tratamento , Espondilose/diagnóstico por imagem , Espondilose/cirurgia , Espondilose/complicações , Doenças da Medula Espinal/diagnóstico por imagem , Doenças da Medula Espinal/cirurgia , Vértebras Cervicais/cirurgia , Estudos RetrospectivosRESUMO
INTRODUCTION: Two-stage exchange (TSE) is the gold standard for the treatment of chronic periprosthetic joint infection (PJI) after total joint arthroplasty of the hip and knee in the United States. Failure of treatment can have devastating consequences for the patient, including poor functional outcomes, multiple further surgeries, and increased mortality. Several factors associated with infection recurrence have previously been identified in the literature. The purpose of this study was to evaluate whether the use of a dual surgical setup was associated with reduced risk of recurrence after TSE for PJI. METHODS: A retrospective study was conducted between January 2000 and December 2021 to isolate patients who underwent TSE after total joint arthroplasty of the hip and knee. Failure was defined as infection recurrence requiring surgical intervention. Demographic factors (age, sex, body mass index, smoking status, American Society of Anesthesiologists status), preoperative comorbidities (hypertension, cardiac disease, diabetes status, depression diagnosis, pulmonary disease), operating surgeon, single versus dual setup, hospital setting, use of long-term antibiotics postoperatively after TSE, aspiration data, and infecting organism were compared between cohorts using multivariate regression analysis. RESULTS: A total of 134 patients were identified who underwent TSE after diagnosis of PJI. The mean follow-up was 67.84 (range, 13 to 236) months. Dual setup (odds ratio, 0.13; confidence interval, 0.02 to 0.52; P = 0.0122) was found to be an independent predictive variable associated with a lower risk of infection recurrence. CONCLUSION: Utilization of a dual surgical setup is a low-cost modifiable risk factor associated with a lower risk of recurrence of after TSE of the hip and knee for PJI.
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Artrite Infecciosa , Artroplastia de Quadril , Artroplastia do Joelho , Infecções Relacionadas à Prótese , Humanos , Artroplastia do Joelho/efeitos adversos , Estudos Retrospectivos , Articulação do Joelho/cirurgia , Artroplastia de Quadril/efeitos adversos , Fatores de Risco , Reoperação/efeitos adversos , Artrite Infecciosa/etiologia , Infecções Relacionadas à Prótese/etiologia , Infecções Relacionadas à Prótese/prevenção & controle , Infecções Relacionadas à Prótese/diagnósticoRESUMO
BACKGROUND: A notable portion of unilateral total knee arthroplasty (TKA) patients undergo arthroplasty of the contralateral knee. The aims of this study were to describe the Minimal Clinically Important Difference for Improvement (MCID-I) and Worsening (MCID-W) in staged bilateral TKAs (BTKAs) and identify factors associated with these outcomes. METHODS: Patients with staged BTKA were retrospectively reviewed. Demographics, surgery details, and Patient-Reported Outcome Measurement Information System Physical Function Short Form 10a (PROMIS PF10a) were collected. MCID-I and MCID-W were defined for PROMIS PF10a. Patients were stratified into nine groups based on the MCID achievement of the first and second TKA: (A) MCID-I, MCID- I, (B) MCID-I, Neutral, (C) MCID-I, MCID-W, (D) Neutral, MCID-I, (E) Neutral, Neutral, (F) Neutral, MCID-W, (G) MCID- W, MCID-I, (H) MCID-W, Neutral, (I) MCID-W, MCID-W. Neutral patients did not achieve either MCID-I or MCID-W. RESULTS: The final cohort consisted of 59 staged BTKA patients. In patients who achieved MCID-I in the first TKA, 39.1% achieved MCID-I again in the second TKA (A), 39.1% were neutral (B), and 21.7% achieved MCID-W (C) in the second TKA. However, 77.8% of those who achieved MCID-W in the first joint (n = 9) went on to achieve MCID-I (G) in the second TKA. Those who achieved MCID-I after both TKAs (A) had a longer staged interval than those who achieved first MCID-I, then MCID-W (C) (15 months vs 8 months, P = 0.0113). CONCLUSION: In staged BTKA, MCID achievement of the first TKA may not be associated with the outcome of the second TKA.
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In an attempt to reduce opioid prescriptions, the state of California mandated physician participation in the Controlled Substance Utilization Review and Evaluation System (CURES). The goal of this study is to assess whether this intervention led to a change in prescribing habits after primary total hip arthroplasty (THA) and total knee arthroplasty (TKA). The 90-day postoperative narcotic use was retrospectively reviewed for 13,382 patients undergoing primary THA and TKA. Patients were divided into pre-CURES and post-CURES cohorts based on date of surgery. Narcotic use was measured in morphine milligram equivalents (MME). There was a 21.3% decrease in postoperative MME post-CURES for patients undergoing THA (756.5±759.5 MME vs 962.00±864.4 MME, P<.0001) and a 19.9% decrease in postoperative MME post-CURES for patients undergoing TKA (1274.3±2707.1 MME vs 1590.6±1725.3 MME, P<.0001). Patients post-CURES required an additional prescription at 2 weeks more frequently compared with patients pre-CURES after THA (27.5% vs 20.5%, P<.001) and TKA (54.2% vs 44.2%, P<.001). Patients undergoing THA had 40.5% and 40.6% less narcotic prescribed compared with patients undergoing TKA pre-CURES and post-CURES (P<.001), respectively. Government guidelines led to a substantial decrease in postoperative MME prescribed after TKA and THA. Patients undergoing THA had a substantially smaller amount of narcotic prescribed than patients undergoing TKA. [Orthopedics. 2023;46(2):70-75.].
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Artroplastia do Joelho , Transtornos Relacionados ao Uso de Opioides , Programas de Monitoramento de Prescrição de Medicamentos , Humanos , Analgésicos Opioides/uso terapêutico , Estudos Retrospectivos , Dor Pós-Operatória/tratamento farmacológico , Dor Pós-Operatória/prevenção & controle , Entorpecentes , Prescrições , California/epidemiologiaRESUMO
Aim: Over the past couple of decades, limb lengthening has evolved to encompass various implants and techniques. The purpose of this study was to (1) determine trends in the utilisation of various limb lengthening techniques for the femur and tibia in the United States, (2) determine trends in 1-year readmission rate following limb lengthening procedures and (3) to study the relationship of limb lengthening implant used and payment method used with the underlying diagnosis associated with limb shortening. Materials and methods: Inpatient data were acquired using the Healthcare Cost and Utilisation Project (HCUP) database from 2005 to 2015 from seven states in the United States. Patients with an International Classification of Diseases (ICD)-9 code for limb lengthening of the femur or tibia were included. A total of 2,563 patients were included. Data were analysed using descriptive statistics, and chi-square test was used for comparison of subcategories. Linear regression analysis was used to examine trends over time. Results: There was a strong linear trend towards increasing proportional use of internal lengthening of the femur from 2011 to 2015 (R2 = 0.99) with an increase of 10.2% per year. A similar trend towards increasing proportional use of internal lengthening of the tibia was seen from 2011 to 2015 (R2 = 0.87) with an increase of 4.9% per year. There was a moderate correlation showing a decrease in readmission rate of 1.07% per year from 2005 to 2015 (R2 = 0.55). Patients with short stature had increased use of internal lengthening and self-payment compared to patients with congenital, post-traumatic or other diagnoses. Conclusion: There was increasing use of internal lengthening techniques from 2011 to 2015. Patients with short stature had higher use of internal lengthening technique and self-pay for payment method. Clinical significance: Intramedullary devices have seen increasing use for limb lengthening procedures. Lengthening technique and payment method may differ by underlying diagnosis. How to cite this article: Mittal A, Allahabadi S, Jayaram R, et al. Trends and Practices in Limb Lengthening: An 11-year US Database Study. Strategies Trauma Limb Reconstr 2023;18(1):21-31.
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BACKGROUND: Revision spinal deformity surgery has a high rate of complications. Fixation may be challenging due to altered anatomy. Screws through a fusion mass are an alternative to pedicle screw fixation. OBJECTIVE: The purpose of this retrospective study was to further elucidate the safety and efficacy of fusion mass screws (FMSs) in revision spinal deformity surgery. DESIGN: Retrospective case series. METHODS: Fifteen freehand FMSs were placed in 6 patients with adult spinal deformity between 2016 and 2018 by the senior author. FMSs were combined with pedicle screws, at times at the same level. FMSs were used to save distal levels from fusion, assist in closing a 3-column osteotomy and provide additional fixation in cases of severe instability. Computed tomography (CT) was used to assess bone mineral density (BMD) and thickness of each fusion mass preoperatively along with accuracy of FMS placement postoperatively. RESULTS: The mean BMD of the fusion mass was 397 Hounsfield units (HU; range: 156-628 HU). The mean AP thickness of the fusion mass was 15.5 ± 4.8 mm (range: 8.6-24.4 mm). The mean FMS length was 35.3 ± 5.5 mm (range: 25-40 mm). There was no evidence of FMS loosening, breakage, or pseudarthrosis at latest follow-up (mean: 2.2 years, range: 1.4-3.1 years). No neurologic deficits were observed. 1/15 screws had a low-grade breach into the canal (<2 mm). No patients required revision surgery. CONCLUSION: FMSs may be used to augment fixation in revision spinal deformity cases when pedicle screw placement may be challenging. FMSs may also provide an additional anchor at levels with pedicular fixation.
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BACKGROUND: Pedicle screw loosening is a complication of spinal instrumentation in osteoporotic patients. Dual-energy x-ray absorptiometry scans are not able to detect variations in bone mineral density (BMD) within specific regions of vertebrae. The purpose of this study was to investigate whether spine T scores correlate with cortical and cancellous BMD of pedicles and other 6 anatomical regions of lumbar spine. METHODS: Eleven cadaveric spines with a mean age of 73 years were digitally isolated by applying filters for cortical and cancellous bone on computed tomography images. Eleven L5 vertebrae were separated into 7 anatomical regions of interest using 3-dimensional software modeling. Hounsfield units (HU) were determined for each region and converted to cortical and cancellous BMD with calibration phantoms of known BMD. Correlations between T scores and HU values were calculated using Pearson correlation coefficient. RESULTS: Mean vertebral T score was 0.15. Cortical BMD of pedicles was strongly correlated with T score (R 2 = 0.74). There was moderate correlation between T score and cortical BMD of lamina, inferior articular process (IAP), superior articular process (SAP), spinous process, and vertebral body. There was weak correlation between T score and cortical BMD of transverse process (R 2 = 0.16). Cancellous BMD of vertebral body was strongly correlated with T score (R 2 = 0.82). There was moderate correlation between T score and cancellous BMD of pedicles, spinous process, and transverse process. There was weak correlation between T scores and cancellous BMD of lamina, IAP, and SAP. CONCLUSIONS: There is a strong correlation between T scores and cortical BMD of lumbar pedicle. There is strong correlation between T scores and cancellous BMD of vertebral body. Cortical and cancellous BMD of transverse process and lamina were weakly correlated with T score and less affected by osteoporosis. CLINICAL RELEVANCE: Patients with osteoporosis may especially benefit from the development of extrapedicular fusion strategies due to the relatively higher bone density of these fixation sites.
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BACKGROUND: A challenge of C2 pedicle screw placement is to avoid penetration into the C1-C2 facet joint, as this may alter normal biomechanics and accelerate joint degeneration. Our objective was to clarify how local anatomy and surgical technique may relate to C2 pedicle screw penetration into the C1-C2 facet joint. METHODS: C2 pedicle screws were inserted using a fluoroscopically assisted freehand technique. Independent fellowship-trained spine surgeons blindly reviewed intraoperative fluoroscopic and postoperative computed tomography (CT) images for evidence of facet joint penetration (FJP). C2 pedicle morphometry, the sagittal angle of the facet joint, axial and sagittal pedicle screw angles, and screw length were measured on the relevant CT images. RESULTS: A total of 34 patients fulfilled the study criteria, and a total of 68 C2 pedicle screws were placed. Eight screws (16%) penetrated the C1-C2 facet joint. The mean sagittal angle of the C1-C2 facet joint was significantly lower in the FJP group compared with the non-FJP group. The mean sagittal angle of the screws was significantly higher in the FJP group compared with the non-FJP group. The mean screw length was significantly greater for screws causing FJP compared with the non-FJP group. The mean axial screw angle was significantly lower in the FJP group compared with the non-FJP group. Pedicle width, length, height, and transverse angle were not significantly associated with FJP. Independent reviewers were able to identify FJP on intraoperative fluoroscopic imaging in 2 out of 8 cases. CONCLUSION: Lower sagittal angle of the facet joint, higher sagittal angle of the pedicle screw, and screw length >24 mm are associated with higher risk of C1-C2 FJP. When placing C2 pedicle screws under these conditions, caution should be taken to avoid FJP. CLINICAL RELEVANCE: Several anatomical and technical factors may increase the risk of C1-C2 FJP during placement of C2 pedicle screws using a fluoroscopically assisted freehand technique, underscoring the importance of preoperative planning and limiting screw length.
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BACKGROUND: NSAIDs have been shown to be highly effective analgesic agents in the postoperative period. NSAIDs do have several potential adverse effects, including kidney injury (AKI). Little is known about AKI in the outpatient total joint arthroplasty (TJA) setting, where patient labs are not closely monitored. The objective of this study was to evaluate the renal safety of combined use of ibuprofen for pain control and aspirin for deep vein thrombosis chemoprophylaxis after outpatient primary TJA. METHODS: Patients undergoing primary total hip or total knee arthroplasty between January 2020 and July 2020 at a single center were included for analysis. All included patients were discharged on a standard regimen including aspirin 81 mg twice a day and ibuprofen 600 mg three times a day. Patients were ordered a serum creatinine test at 2 and 4 weeks postoperatively. Patients with postoperative acute kidney injury were identified per Acute Kidney Injury Network criteria. RESULTS: Between January 23, 2020, and August 30, 2020, 113 patients were included in this study, of whom creatinine levels were measured in 103 patients (90.3%) at the 2-week postoperative time point, 58 patients (50.9%) at the 4-week time point, and 48 (42.1%) at combined 2- and 4-week time points. Three patients (2.9%) were found to have an AKI. CONCLUSION: This study found a rate of AKI of 2.9% with the use of dual NSAID therapy postoperatively after primary TJA. All cases occurred at 2 weeks postoperatively and saw spontaneous resolution.
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Injúria Renal Aguda , Artroplastia de Quadril , Injúria Renal Aguda/induzido quimicamente , Injúria Renal Aguda/prevenção & controle , Anti-Inflamatórios não Esteroides/efeitos adversos , Artroplastia de Quadril/efeitos adversos , Aspirina , Humanos , Ibuprofeno/efeitos adversos , Pacientes Ambulatoriais , Complicações Pós-Operatórias/induzido quimicamente , Complicações Pós-Operatórias/prevenção & controle , Período Pós-Operatório , Estudos Retrospectivos , Fatores de RiscoRESUMO
Purpose: To compare hamstring autograft primary anterior cruciate ligament reconstruction (ACLR) techniques including adult-type/anatomic, transphyseal, and transphyseal techniques by (1) ACL graft tear, (2) contralateral ACL tear, and (3) all-cause ipsilateral reoperation. Methods: A retrospective, single-surgeon review was performed including all ACLR with hamstring autograft in pediatric and adolescent patients from 2011 to 2019. Minimum 2-year follow-up was required for patients unless a tear or reoperation was sustained before that time point. Data collected included demographics and baseline surgical variables, type of reconstruction, sporting activity, and deviations from rehabilitation protocols. Comparisons were made among hamstring autograft reconstruction groups (adult-type/anatomic, transphyseal, and partial transphyseal) for primary outcomes of graft tear, contralateral ACL tears, and all-cause ipsilateral knee reoperations, including hardware removal. Secondary surgeries performed with different surgeons were noted. Results: In total, 214 patients of age 15.2 ± 2.0 years with 4.1 ± 1.7-year follow-up were included. Overall graft tear rate was 11.7% (11.0% adult-type vs 19.1% transphyseal vs 5.6% partial transphyseal; P = .18). On univariate analyses, all-cause ipsilateral reoperation did not differ by technique (21.3% vs 31.0% vs 33.3%; P = .20), and neither did contralateral ACL tear (8.1% vs 9.5% vs 0%; P = .17). 21.7% of ipsilateral revision ACLRs (all adult-type) and 16.7% of patients with any reoperations had subsequent procedures performed with a different surgeon. Conclusions: The graft tear rates in primary hamstring autograft ACLRs in the adolescent population did not significantly differ by technique (11.0% vs 19.1% vs 5.6% in adult-type, transphyseal, and partial transphyseal reconstructions, respectively). Furthermore, contralateral ACL tears (8.1% vs 9.5% vs 0%) and all-cause (including > 1/4 hardware removal) ipsilateral knee reoperations (21.3% vs 31.0% vs 33.3%) did not statistically differ. Higher powered studies may detect statistical significance in the observed differences in this study. Level of evidence: Level IV, therapeutic case series.
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Introduction: Total hip arthroplasty (THA) requires forceful maneuvers that can cause the pelvis to shift from its original position. Various methods for stabilizing the pelvis in the lateral decubitus position exist, but there is limited data quantifying the relative stability of each hip positioner. We sought to quantify the pelvic movement that occurred in four commercially available hip positioners during surgeon induced motion of the hip. Methods: An infrared marker was attached to the ilium of a cadaver secured in the lateral decubitus position. Four commercially available hip positioners were used for positioning: Beanbag, Pegboard, Stulberg, and ExactFit. Rotation and translation was captured using an infrared marker and camera system while the hip was moved through six motions (Flexion, Extension, Internal Rotation, External Rotation, Push, and Pull). Results: The Beanbag had the greatest amount of rotation and translation of the pelvis, with maximum hip rotation of 41.5°. The Stulberg and Pegboard positioners showed intermediate stability, with a maximum rotation of 7.8° and 17.1°, respectively. The ExactFit hip positioner resulted in the least amount of motion of the pelvis, with a maximum rotation of the pelvis of up to 3.2°. Of the simulated motions performed, internal rotation and flexion of the hip led to the greatest changes in pelvic rotation and translation. Conclusion: The ExactFit positioner was associated with the smallest amount of pelvic motion during simulated motions of hip arthroplasty, followed by the Stulberg, Pegboard, and Beanbag positioners. Further studies are required to correlate this information with clinical outcomes following total hip arthroplasty.
RESUMO
BACKGROUND: Traditional pedicle screws are currently the gold standard to achieve stable 3-column fixation of the degenerative lumbar spine. However, there are cases in which pedicle screw fixation may not be ideal. Due to their starting point lateral to the pars interarticularis, pedicle screws require a relatively wide dissection along with a medialized trajectory directed toward the centrally located neural elements and prevertebral vasculature. In addition, low bone mineral density remains a major risk factor for pedicle screw loosening, pullout, and pseudarthrosis. The purpose of this article is to review the indications, advantages, disadvantages, and complications associated with posterior fixation techniques of the degenerative lumbar spine beyond the traditional pedicle screws. METHODS: Comprehensive literature searches of the PubMed, Scopus, and Web of Science databases were performed for 5 methods of posterior spinal fixation, including (1) cortical bone trajectory (CBT) screws, (2) transfacet screws, (3) translaminar screws, (4) spinous process plates, and (5) fusion mass screws and hooks. Articles that had been published between January 1, 1990, and January 1, 2020, were considered. Non-English-language articles and studies involving fixation of the cervical or thoracic spine were excluded from our review. RESULTS: After reviewing over 1,700 articles pertaining to CBT and non-pedicular fixation techniques, a total of 284 articles met our inclusion criteria. CBT and transfacet screws require less-extensive exposure and paraspinal muscle dissection compared with traditional pedicle screws and may therefore reduce blood loss, postoperative pain, and length of hospital stay. In addition, several methods of non-pedicular fixation such as translaminar and fusion mass screws have trajectories that are directed away from or posterior to the spinal canal, potentially decreasing the risk of neurologic injury. CBT, transfacet, and fusion mass screws can also be used as salvage techniques when traditional pedicle screw constructs fail. CONCLUSIONS: CBT and non-pedicular fixation may be preferred in certain lumbar degenerative cases, particularly among patients with osteoporosis. Limitations of non-pedicular techniques include their reliance on intact posterior elements and the lack of 3-column fixation of the spine. As a result, transfacet and translaminar screws are infrequently used as the primary method of fixation. CBT, transfacet, and translaminar screws are effective in augmenting interbody fixation and have been shown to significantly improve fusion rates and clinical outcomes compared with stand-alone anterior lumbar interbody fusion. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
Assuntos
Parafusos Pediculares , Fusão Vertebral , Osso Cortical/cirurgia , Humanos , Vértebras Lombares/cirurgia , Região Lombossacral , Fusão Vertebral/métodosRESUMO
¼: The spinal column has a propensity for lesions to manifest in a multifocal manner, and identification of the lesions can be difficult. ¼: When used to image the spine, magnetic resonance imaging (MRI) most accurately identifies the presence and location of lesions, guiding the treatment plan and preventing potentially devastating complications that are known to be associated with unidentified lesions. ¼: Certain conditions clearly warrant evaluation with whole-spine MRI, whereas the use of whole-spine MRI with other conditions is more controversial. ¼: We suggest whole-spine MRI when evaluating and treating any spinal infection, lumbar stenosis with upper motor neuron signs, ankylosing disorders of the spine with concern for fracture, congenital scoliosis undergoing surgical correction, and metastatic spinal tumors. ¼: Use of whole-spine MRI in patients with idiopathic scoliosis and acute spinal trauma remains controversial.
Assuntos
Escoliose , Coluna Vertebral , Humanos , Região Lombossacral , Imageamento por Ressonância Magnética/métodos , Espectroscopia de Ressonância Magnética , Escoliose/diagnóstico por imagem , Escoliose/cirurgia , Coluna Vertebral/patologiaRESUMO
BACKGROUND: Osteochondral injuries of the elbow are limiting and affect the ability of pediatric and adolescent athletes to participate in sports. PURPOSE: To report short- and midterm outcomes on athletes undergoing microfracture or fragment fixation of osteochondral elbow lesions and evaluate the effects thereof on sporting activity. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: This was a retrospective study analyzing patients who underwent surgical treatment via microfracture or fragment fixation for osteochondral elbow lesions. Patients were treated at a single institution by a single surgeon between 2012 and 2019. Diagnosis was confirmed with magnetic resonance imaging, and patients were indicated for surgery after having persistent symptoms despite trialing rest, immobilization, and/or activity restriction for at least 3 months. Demographic data including sports of choice were collected preoperatively. Imaging and intraoperative findings were documented, and any complications were noted. Range of motion (ROM) was compared pre- to postoperatively. Return-to-sport evaluation included the ability to play the preoperative sport of choice. RESULTS: In total, 23 patients (25 elbows) were included with a mean follow-up of 23.5 months (range, 6-60.3 months) and a mean age of 13.8 years. Of 25 lesions, 20 (80%) were on the athlete's dominant side. There was significant improvement from pre- to postoperative ROM, including extension (mean ± SD, 6.4° ± 5.3° to 0.04° ± 0.2°; P < .00001), flexion (129.2° ± 10.6° to 138.6° ± 4.4°; P = .00013), and arc of ROM (122.6° ± 13.2° to 138.6° ± 4.4°; P < .00001). Mean lesion size was 81.9 ± 59.3 mm2 (range, 15-225 mm2). All elbows demonstrated radiographic healing postoperatively. Mean time to release to sport was 4.48 ± 1.38 months (range, 2.5-8 months). Six (26.1%) patients changed or stopped their preoperative sporting activity, including 2 of 4 gymnasts and 4 of 11 baseball players. CONCLUSION: Arthroscopic technique with lesion debridement and microfracture or fixation appears safe and results in radiographic healing; however, with these techniques, there remains a high rate of inability to return to sport in patients involved in higher-demand upper extremity activity, such as baseball and gymnastics. Further treatment strategies, including cartilage restoration procedures, may be warranted in this population.